Coatings,
Год журнала:
2024,
Номер
15(1), С. 15 - 15
Опубликована: Дек. 27, 2024
Flexible
perovskite
solar
cells
(F-PSCs)
hold
great
potential
for
lightweight
photovoltaic
applications
due
to
their
flexibility,
bending
compatibility,
and
low
manufacturing
cost.
However,
tin
oxide
(SnO2),
as
a
common
electron
transport
layer
(ETL)
used
in
F-PSCs,
typically
suffers
from
high-density
surface
defects
that
hinder
the
charge
extraction
efficiency
deteriorate
crystallization
quality
of
upper
film.
Additionally,
poor
buried
interface
intensifies
lattice
extrusion
strain
residue
across
films,
further
aggravating
mechanical
brittleness
devices.
To
address
issues,
we
developed
molecular
bridging
strategy
by
introducing
2,2′-oxybis(ethylenediamine)
dihydrochloride
(DO)
at
perovskite/SnO2
interface.
The
diammonium
groups
spacer
ligands
can
achieve
bidentate
anchoring
on
SnO2
cooperating
with
oxygen
atom
alkyl
chain
passivate
charged
tailored
properties
also
endow
optimized
films
significantly
alleviate
tensile
strengthen
perovskite’s
pliability.
As
result,
F-PSCs
achieved
champion
23.50%,
outperforming
value
21.87%
control
device.
Furthermore,
devices
exhibited
excellent
robustness,
maintaining
90%
initial
PCE
after
6000
cycles
radius
4
mm.
This
work
presents
reliable
synergistic
optimization
contact
interface,
contributing
development
efficient
stable
F-PSCs.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
Blade-coating
techniques
have
attracted
significant
attention
for
perovskite
solar
cells
(PSCs)
due
to
their
high
precursor
utilization
and
simplicity.
However,
the
power
conversion
efficiency
(PCE)
of
blade-coated
PSCs
often
lags
behind
that
spin-coated
devices,
mainly
difficulties
in
precisely
controlling
film
formation
during
pre-nucleation,
heterogeneous
nucleation,
crystallization
blade-coating
N
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 21, 2024
Abstract
The
interface
energy
level
alignment
modulation
and
charge
carrier
transportation
play
an
important
role
in
the
device
performance
of
perovskite
solar
cells
(PSCs).
Herein,
tailored
hydrophobic
metal‐organic
frameworks
(MOFs)
are
employed
as
interfacial
layers
between
absorbers
hole
transport
(HTLs).
MOFs
feature
abundant
carboxylic
acid
groups
capable
bonding
with
Pb
2+
organic
cations,
which
can
effectively
passivate
defects
suppress
non‐radiative
recombination.
Meanwhile,
MOF
optimized
HTL,
further
facilitating
transportation.
Specifically,
CsFAMA‐based
PSCs
a
bandgap
1.63
eV
attained
power
conversion
efficiency
(PCE)
23.06%
upon
modification
MOFs.
Additionally,
MOFs‐treated
FA‐based
1.55
achieved
remarkable
PCE
24.81%,
accompanied
by
outstanding
fill
factor
84.3%
minimal
open‐circuit
voltage
loss
merely
0.386
V.
Furthermore,
integration
layer
substantially
improved
moisture
stability
PSCs.
unencapsulated
CsFAMA
modified
retained
91.2%
their
initial
after
2500
h
aging
under
ambient
conditions
40%
relative
humidity
(RH).
This
work
underpins
commercialization
diverse
bandgaps.
The Journal of Physical Chemistry Letters,
Год журнала:
2024,
Номер
15(42), С. 10514 - 10524
Опубликована: Окт. 14, 2024
All-inorganic
CsPbI3
films
necessitate
higher
annealing
temperatures
for
high-quality
crystallization.
Consequently,
the
conventional
low-temperature
solution
approach
often
results
in
poor
crystallization
flexible
films,
significantly
degrading
optoelectronic
performance
and
stability
of
perovskite
solar
cells
(f-PSCs).
Herein,
a
heterogeneous
CaF2
nanocrystal
seed-induced
strategy
has
been
successfully
utilized
to
achieve
enhanced
CsPbI2.81Br0.19
film.
Due
their
good
lattice
match
with
material,
nanoparticles
can
decrease
critical
Gibbs
free
energy
nucleation,
thereby
accelerating
γ-phase
at
low
temperatures.
This
leads
an
improved
crystalline
quality
film
temperatures,
which
minimizes
defects
enhances
f-PSCs.
The
f-PSCs
achieved
champion
power
conversion
efficiency
15.03%
demonstrated
mechanical
stability,
retaining
98.1%
initial
even
after
60
000
bending
cycles
curvature
radius
5
mm.
Coatings,
Год журнала:
2024,
Номер
15(1), С. 15 - 15
Опубликована: Дек. 27, 2024
Flexible
perovskite
solar
cells
(F-PSCs)
hold
great
potential
for
lightweight
photovoltaic
applications
due
to
their
flexibility,
bending
compatibility,
and
low
manufacturing
cost.
However,
tin
oxide
(SnO2),
as
a
common
electron
transport
layer
(ETL)
used
in
F-PSCs,
typically
suffers
from
high-density
surface
defects
that
hinder
the
charge
extraction
efficiency
deteriorate
crystallization
quality
of
upper
film.
Additionally,
poor
buried
interface
intensifies
lattice
extrusion
strain
residue
across
films,
further
aggravating
mechanical
brittleness
devices.
To
address
issues,
we
developed
molecular
bridging
strategy
by
introducing
2,2′-oxybis(ethylenediamine)
dihydrochloride
(DO)
at
perovskite/SnO2
interface.
The
diammonium
groups
spacer
ligands
can
achieve
bidentate
anchoring
on
SnO2
cooperating
with
oxygen
atom
alkyl
chain
passivate
charged
tailored
properties
also
endow
optimized
films
significantly
alleviate
tensile
strengthen
perovskite’s
pliability.
As
result,
F-PSCs
achieved
champion
23.50%,
outperforming
value
21.87%
control
device.
Furthermore,
devices
exhibited
excellent
robustness,
maintaining
90%
initial
PCE
after
6000
cycles
radius
4
mm.
This
work
presents
reliable
synergistic
optimization
contact
interface,
contributing
development
efficient
stable
F-PSCs.
